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US3815239A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of filling and sealing developmental pit and fissures

Assignee: Individual
•
Filing: 1972-01-13
•
Granted: 1974-06-11
•
Expires: 1992-01-13
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Abstract

Abstract Dental developmental pit and fissure sealant composition comprising component A composed essentially of a thermosetting resin of the formula: WHEREIN R1 is hydrogen or alkyl of one to four carbon atoms; and R is (CH2CH2-O)x wherein x is an integer of 1 to 5, and an accelerator for said resin; and component B composed in one embodiment essentially of a solution of a peroxide catalyst for the resin of A, and in an alternative embodiment including additional resin of A. The fissure sealant compositions disclosed have excellent surface tension characteristics, low viscosity, and good penetration ability. The sealant compositions are applied stepwise by first applying a drop of either component to a cleaned and primed surface of a tooth to be sealed, allowing it to penetrate for 30 seconds, then applying a drop of the other component, allowing the components to remain in contact with each other for two minutes, and then removing any excess unpolymerized material. In a preferred embodiment component A comprises diethyleneglycol dimethacrylate and N-bis(hydroxyethyl)-p-toluidine accelerator, and component B is comprised of diethyleneglycol dimethacrylate and benzoyl peroxide catalyst, the latter component being applied to the tooth first.

Inventors

  • 👤 H Lee
  • 👤 J Orlowski
  • 👤 A Kobashigawa

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 18:50
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/20; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 13 words
A method as claimed in claim 1 wherein said compound is diethyleneglycol dimethacrylAte.
Claim 2
Independent Claim 38 words
A method of filling and sealing developmental pits and fissures in tooth surfaces which comprises applying to the surface of the tooth stepwise a composition comprising: component A, consisting essentially of a thermosetting polymerizable resin of the formula:
Claim 3
Dependent Claim 20 words
A method as claimed in claim 3 wherein component B comprises a peroxide catalyst and a resin of the formula:
Claim 4
Dependent Claim 18 words
A method as claimed in claim 4 wherein said resin of component A and B is diethyleneglycol dimethacrylate.
Claim 5
Dependent Claim 29 words
A method as claimed in claim 5, wherein said first one of said components A and B is component A and said second of said components is component B.
Claim 6
Dependent Claim 29 words
A method as claimed in claim 5, wherein said first one of said components A and B is component B and said second of said components is component A.
Claim 7
Dependent Claim 13 words
A method as claimed in claim 3 wherein said resin is diethyleneglycol dimethacrylate.
Claim 8
Dependent Claim 62 words
A method as claimed in claim 3 wherein the accelerator of component A is N-bis(hydroxyethyl)-p-toluidine and comprises from 0.5 to 8 percent by weight of the total amount of diethyleneglycol dimethacrylate in said composition, and the peroxide catalyst of component B is benzoyl peroxide and comprises from 0.5 to 8.0% by weight of the total amount of diethyleneglycol dimethacrylate in said composition.
Claim 9
Dependent Claim 42 words
A method as claimed in claim 9 further comprising first cleaning said tooth with a phosphoric acid solution, drying said tooth, priming said tooth with a hydrolyzed gamma-methacryloxypropyltrimethoxysilane, and again drying the tooth prior to application of said components A and B.
Claim 10
Dependent Claim 34 words
A method as claimed in claim 3 wherein component A is applied to the surface of the tooth first, and then component B is applied over component A on the surface of the tooth.
Claim 11
Dependent Claim 42 words
A method as claimed in claim 11 further comprising first cleaning said tooth with a phosphoric acid solution, drying said tooth, priming said tooth with a hydrolyzed gamma-methacryloxypropyltrimethoxysilane, and again drying the tooth prior to application of said components A and B.
Claim 12
Dependent Claim 29 words
A method as claimed in claim 3, wherein said first one of said components A and B is component A and said second of said components is component B.
Claim 13
Dependent Claim 75 words
A method as claimed in claim 3, wherein component B consists essentially of a concentrated solution of benzoyl peroxide in an organic solvent and component A consists essentially of diethyleneglycol dimethacrylate and from 0.5 to 8 percent by wt. of the diethyleneglycol dimethacrylate of N-bis (hydroxyethyl)-p-toluidine, said process comprising applying component B to the tooth first, drying component B, and then applying component A over the dried component B on the surface of the tooth.

References Cited (Backward Citations)

US2406454A Cited
US2745817A Cited
US2684305A Cited
US2758106A Cited
US2779751A Cited
US3506479A Cited
US3473949A Cited
US3672942A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-06-10 1977-12-10 1978-06-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-06-10 1981-12-10 1982-06-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-06-10 1985-12-10 1986-06-11 $7700.00 Window Closed / Lapsed

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